Cannabidiol Use to Reduce Cravings in Individuals With Opioid Use Disorder on Buprenorphine (CURB)
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ClinicalTrials.gov Identifier: NCT04192370 |
Recruitment Status :
Completed
First Posted : December 10, 2019
Results First Posted : May 18, 2023
Last Update Posted : May 18, 2023
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Condition or disease | Intervention/treatment | Phase |
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Opioid-use Disorder | Drug: Cannabidiol 600mg | Phase 2 |
Studies have indicated that medication treatment for opioid use disorder (OUD) with buprenorphine, methadone, or extended-release naltrexone reduces the risk for overdose by 70%. However, treatment dropout rates remain unacceptably high, with approximately 50% of patients discontinuing treatment 6 months after initiation. There is a substantial body of research indicating that high rates of treatment discontinuation are due to the emergence of intense cravings to use illicit opioids in response to cues - which are reminders of the drug such as drug paraphernalia. Much of the research so far in improving treatment retention on medications for OUD have focused on helping patients learn how to avoid triggers and to manage their cravings if they do emerge, and psychosocial treatments as adjuncts to medications has similarly not been as helpful as hoped. As such, there is a critical need to identify novel strategies that will improve retention in medical treatment for OUD, and cannabidiol (CBD) has emerged as a possible adjunct to OUD treatment, as it appears to target brain regions that mediate cue-induced cravings. Two studies so far have shown that CBD reduces cue-induced cravings for abstinent individuals with OUD not taking any medications, but the impact of CBD on cue-induced cravings among individuals stabilized on buprenorphine is not known.
Given that long-term medication treatment remains the gold-standard approach, a critical question that remains unanswered is whether CBD can be used as an adjunct to buprenorphine treatment to reduce cue-induced cravings. As such, the purpose of this week-long open-label feasibility pilot is to determine the impact of cannabidiol on cue-induced cravings among individuals with opioid use disorder who are stable on sublingual buprenorphine treatment. Patients with OUD currently receiving treatment with sublingual buprenorphine will be eligible to enroll. The cue-induced cravings assessment will be conducted before and after the CBD administration.
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 8 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Single-arm, Open-label Feasibility Pilot of Cannabidiol as an Adjunct to Sublingual Buprenorphine on Cue-induced Cravings Among Individuals With Opioid Use Disorder |
Actual Study Start Date : | August 3, 2020 |
Actual Primary Completion Date : | December 30, 2021 |
Actual Study Completion Date : | December 30, 2021 |

Arm | Intervention/treatment |
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Experimental: Cannabidiol
As this is a single-arm, open-label study, all subjects will receive the interventional arm, specifically 600mg of oral cannabidiol once daily for 3 consecutive days.
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Drug: Cannabidiol 600mg
All subjects will receive 600mg of oral cannabidiol for 3 days in an open-label fashion. Cannabidiol will be provided using Epidiolex™ oral solution 100mg/mL, and the drug will be procured by the Brigham and Women's Hospital (BWH) Investigational Drug Services (IDS) pharmacy. The first dose will be administered at the BWH Center for Clinical Investigation, while doses 2 and 3 will be self-administrated at home. The CBD will be repacked in pre-drawn syringes for the subjects to self-administer at home.
Other Names:
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- Change in Cue-induced Cravings and Anxiety After 3 Days of Cannabidiol Administration [ Time Frame: pre-exposure (Visit 2, which is day 2 of the 5-day study) and post-exposure (Visit 3, which is day 5 of the 5-day study) ]Change in cue-induced cravings and anxiety measured before and after 3 days of cannabidiol administration. Subjects will use the Cue-Induced Opioid Craving and Anxiety Scales to note their responses using a visual analog scale of 0 to 10, 0 being "not at all" and 10 being "extremely." Higher scores thus mean a "worse" outcome (i.e. more intense cravings/anxiety).

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Ages Eligible for Study: | 18 Years to 75 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Diagnosis of Diagnostic and Statistical Manual of Mental Disorders (DSM-5) opioid use disorder, severe
- Currently in treatment with methadone or buprenorphine
Exclusion Criteria:
- Requiring level of care higher than outpatient treatment for alcohol, sedative/hypnotics, or stimulants
- Any current mood episode requiring level of care higher than outpatient treatment
- History of psychotic disorder or bipolar disorder
- Currently pregnant
- Hepatic liver enzymes greater than 3x upper normal limit
- Hypersensitivity to cannabinoids or sesame oil (cannabidiol solution comes in sesame oil emulsion)
- Currently taking any medications with known significant pharmacokinetic interactions with CBD

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04192370
United States, Massachusetts | |
Brigham and Women's Hospital | |
Boston, Massachusetts, United States, 02115 |
Principal Investigator: | Joji Suzuki, M.D. | Brigham and Women's Hospital |
Documents provided by Joji Suzuki, MD, Brigham and Women's Hospital:
Responsible Party: | Joji Suzuki, MD, Director, Division of Addiction Psychiatry, Brigham and Women's Hospital |
ClinicalTrials.gov Identifier: | NCT04192370 |
Other Study ID Numbers: |
2019P003384 |
First Posted: | December 10, 2019 Key Record Dates |
Results First Posted: | May 18, 2023 |
Last Update Posted: | May 18, 2023 |
Last Verified: | April 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Opioid-Related Disorders Substance-Related Disorders Narcotic-Related Disorders Chemically-Induced Disorders |
Mental Disorders Cannabidiol Anticonvulsants |